;// 图片上传
(function($, undefined) {

	$(function() {
		var $wrap = $('.uploader-list-container'),
		// 图片容器
		$queue = $('<ul class="filelist"></ul>').appendTo($wrap.find('.queueList')),
		// 状态栏，包括进度和控制按钮
		$statusBar = $wrap.find('.statusBar'),
		// 文件总体选择信息。
		$info = $statusBar.find('.info'),
		// 上传按钮
		$upload = $wrap.find('.uploadBtn'),
		// 没选择文件之前的内容。
		$placeHolder = $wrap.find('.placeholder'), $progress = $statusBar.find('.progress').hide(),
		// 添加的文件数量
		fileCount = 0,
		// 添加的文件总大小
		fileSize = 0,
		// 优化retina, 在retina下这个值是2
		ratio = window.devicePixelRatio || 1,
		// 缩略图大小
		thumbnailWidth = 110 * ratio, thumbnailHeight = 110 * ratio,
		// 可能有pedding, ready, uploading, confirm, done.
		state = 'pedding',
		// 所有文件的进度信息，key为file id
		percentages = {},
		// 判断浏览器是否支持图片的base64
		isSupportBase64 = (function() {
			var data = new Image();
			var support = true;
			data.onload = data.onerror = function() {
				if (this.width != 1 || this.height != 1) {
					support = false;
				}
			}
			data.src = "";
			return support;
		})(),
		// 检测是否已经安装flash，检测flash的版本
		flashVersion = (function() {
			var version;

			try {
				version = navigator.plugins['Shockwave Flash'];
				version = version.description;
			} catch (ex) {
				try {
					version = new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version');
				} catch (ex2) {
					version = '0.0';
				}
			}
			version = version.match(/\d+/g);
			return parseFloat(version[0] + '.' + version[1], 10);
		})(), supportTransition = (function() {
			var s = document.createElement('p').style, r = 'transition' in s || 'WebkitTransition' in s || 'MozTransition' in s || 'msTransition' in s || 'OTransition' in s;
			s = null;
			return r;
		})(),
		// WebUploader实例
		uploader;
		// 实例化
		uploader = WebUploader.create({
			pick : {
				id : '#filePicker-2',
				label : '点击选择图片'
			},
			dnd : '#dndArea',
			swf : '/static/lib/webuploader/0.1.5/Uploader.swf',
			chunked : false,
			server : '/upload',
			accept : {
				title : 'Images',
				extensions : 'gif,jpg,jpeg,bmp,png,ico,png',
				mimeTypes : 'image/*'
			},
			// 禁掉全局的拖拽功能。这样不会出现图片拖进页面的时候，把图片打开。
			disableGlobalDnd : true,
			fileNumLimit : 1,
			fileSizeLimit : 200 * 1024 * 1024, // 200 M
			fileSingleSizeLimit : 10 * 1024 * 1024
		});
		// 拖拽时不接受 js, txt 文件。
		// uploader.on('dndAccept', function(items) {
		// for (var i = 0, j = items.length; i < j; i++) {
		// if (!/\bxml\b/.test(items[i].type)) {
		// return false;
		// }
		// }
		// return true;
		// });

		// 拖拽时不接受 js, txt 文件。
		uploader.on('dndAccept', function(items) {
			var denied = false, len = items.length, i = 0,
			// 修改js类型
			unAllowed = 'text/plain;application/javascript ';

			for (; i < len; i++) {
				// 如果在列表里面
				if (~unAllowed.indexOf(items[i].type)) {
					denied = true;
					break;
				}
			}

			return !denied;
		});
		// 添加“添加文件”的按钮，
		uploader.addButton({
			id : '#filePicker2',
			label : '继续添加'
		});

		uploader.on('dialogOpen', function() {
		});

		uploader.on('ready', function() {
			window.uploader = uploader;
		});

		// 当有文件添加进来时执行，负责view的创建
		function addFile(file) {
			var $li = $('<li id="' + file.id + '">' + '<p class="title">' + file.name + '</p>' + '<p class="imgWrap"></p>' + '<p class="progress"><span></span></p>' + '</li>'),

			$btns = $('<div class="file-panel">' + '<span class="cancel">删除</span>' + '<span class="rotateRight">向右旋转</span>' + '<span class="rotateLeft">向左旋转</span></div>').appendTo($li), $prgress = $li.find('p.progress span'), $wrap = $li.find('p.imgWrap'), $info = $('<p class="error"></p>'),

			showError = function(code) {
				switch (code) {
				case 'exceed_size':
					text = '文件大小超出';
					break;

				case 'interrupt':
					text = '上传暂停';
					break;

				default:
					text = '上传失败，请重试';
					break;
				}

				$info.text(text).appendTo($li);
			};

			if (file.getStatus() === 'invalid') {
				showError(file.statusText);
			} else {
				// @todo lazyload
				$wrap.text('预览中');
				uploader.makeThumb(file, function(error, src) {
					var img;
					if (error) {
						$wrap.text('不能预览');
						return;
					}

					if (isSupportBase64) {
						img = $('<img src="' + src + '">');
						$wrap.empty().append(img);
					} else {
						$wrap.text("预览出错");
					}
				}, thumbnailWidth, thumbnailHeight);

				percentages[file.id] = [ file.size, 0 ];
				file.rotation = 0;
			}

			file.on('statuschange', function(cur, prev) {
				if (prev === 'progress') {
					$prgress.hide().width(0);
				} else if (prev === 'queued') {
					$li.off('mouseenter mouseleave');
					$btns.remove();
				}

				// 成功
				if (cur === 'error' || cur === 'invalid') {
					showError(file.statusText);
					percentages[file.id][1] = 1;
				} else if (cur === 'interrupt') {
					showError('interrupt');
				} else if (cur === 'queued') {
					percentages[file.id][1] = 0;
				} else if (cur === 'progress') {
					$info.remove();
					$prgress.css('display', 'block');
				} else if (cur === 'complete') {
					$li.append('<span class="success"></span>');
				}

				$li.removeClass('state-' + prev).addClass('state-' + cur);
			});

			$li.on('mouseenter', function() {
				$btns.stop().animate({
					height : 30
				});
			});

			$li.on('mouseleave', function() {
				$btns.stop().animate({
					height : 0
				});
			});

			$btns.on('click', 'span', function() {
				var index = $(this).index(), deg;

				switch (index) {
				case 0:
					uploader.removeFile(file);
					return;

				case 1:
					file.rotation += 90;
					break;

				case 2:
					file.rotation -= 90;
					break;
				}

				if (supportTransition) {
					deg = 'rotate(' + file.rotation + 'deg)';
					$wrap.css({
						'-webkit-transform' : deg,
						'-mos-transform' : deg,
						'-o-transform' : deg,
						'transform' : deg
					});
				} else {
					$wrap.css('filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation=' + (~~((file.rotation / 90) % 4 + 4) % 4) + ')');
				}

			});

			$li.appendTo($queue);
		}

		// 负责view的销毁
		function removeFile(file) {
			if (fileCount < uploader.options.fileNumLimit) {
				$('#filePicker2').removeClass('element-invisible');
			} else {
				$('#filePicker2').addClass('element-invisible');
			}
			var $li = $('#' + file.id);
			delete percentages[file.id];
			updateTotalProgress();
			$li.off().find('.file-panel').off().end().remove();
		}

		function updateTotalProgress() {
			var loaded = 0, total = 0, spans = $progress.children(), percent;
			$.each(percentages, function(k, v) {
				total += v[0];
				loaded += v[0] * v[1];
			});
			percent = total ? loaded / total : 0;
			spans.eq(0).text(Math.round(percent * 100) + '%');
			spans.eq(1).css('width', Math.round(percent * 100) + '%');
			updateStatus();
		}

		function updateStatus() {
			var text = '', stats;

			if (state === 'ready') {
				text = '选中' + fileCount + '张图片，共' + WebUploader.formatSize(fileSize) + '。';
			} else if (state === 'confirm') {
				stats = uploader.getStats();
				if (stats.uploadFailNum) {
					text = '已成功上传' + stats.successNum + '张照片至XX相册，' + stats.uploadFailNum + '张照片上传失败，<a class="retry" href="#">重新上传</a>失败图片或<a class="ignore" href="#">忽略</a>'
				}

			} else {
				stats = uploader.getStats();
				text = '共' + fileCount + '张（' + WebUploader.formatSize(fileSize) + '），已上传' + stats.successNum + '张';

				if (stats.uploadFailNum) {
					text += '，失败' + stats.uploadFailNum + '张';
				}
			}

			$info.html(text);
		}

		function setState(val) {
			var file, stats;
			if (val === state) {
				return;
			}
			$upload.removeClass('state-' + state);
			$upload.addClass('state-' + val);
			state = val;
			switch (state) {
			case 'pedding':
				$placeHolder.removeClass('element-invisible');
				$queue.hide();
				$statusBar.addClass('element-invisible');
				uploader.refresh();
				break;

			case 'ready':
				$placeHolder.addClass('element-invisible');
				$queue.show();
				$statusBar.removeClass('element-invisible');
				uploader.refresh();
				break;

			case 'uploading':
				$progress.show();
				$upload.text('暂停上传');
				break;

			case 'paused':
				$progress.show();
				$upload.text('继续上传');
				break;

			case 'confirm':
				$progress.hide();
				$upload.text('开始上传');
				stats = uploader.getStats();
				if (stats.successNum && !stats.uploadFailNum) {
					setState('finish');
					return;
				}
				break;
			case 'finish':
				stats = uploader.getStats();
				if (stats.successNum) {
					parent.layer.alert('上传成功', {
						icon : 6,
						time : 1000
					});
				} else {
					// 没有成功的图片，重设
					state = 'done';
					location.reload();
				}
				break;
			}
			updateStatus();
		}

		uploader.onUploadProgress = function(file, percentage) {
			var $li = $('#' + file.id), $percent = $li.find('.progress span');
			$percent.css('width', percentage * 100 + '%');
			percentages[file.id][1] = percentage;
			updateTotalProgress();
		};

		uploader.onFileQueued = function(file) {
			fileCount++;
			fileSize += file.size;
			if (fileCount === 1) {
				$placeHolder.addClass('element-invisible');
				$statusBar.show();
			}
			addFile(file);
			setState('ready');
			updateTotalProgress();
			if (fileCount < uploader.options.fileNumLimit) {
				$('#filePicker2').removeClass('element-invisible');
			} else {
				$('#filePicker2').addClass('element-invisible');
			}
		};

		uploader.onFileDequeued = function(file) {
			fileCount--;
			fileSize -= file.size;
			if (!fileCount) {
				setState('pedding');
			}
			removeFile(file);
			updateTotalProgress();
			if (fileCount < uploader.options.fileNumLimit) {
				$('#filePicker2').removeClass('element-invisible');
			} else {
				$('#filePicker2').addClass('element-invisible');
			}
		};

		uploader.on('all', function(type) {
			var stats;
			switch (type) {
			case 'uploadFinished':
				setState('confirm');
				break;

			case 'startUpload':
				setState('uploading');
				break;

			case 'stopUpload':
				setState('paused');
				break;
			}
			parent.reinitIframe();
		});
		uploader.onError = function(code) {
			parent.layer.alert('出错了: ' + code, {
				icon : 5
			});
			if (fileCount < uploader.options.fileNumLimit) {
				$('#filePicker2').removeClass('element-invisible');
			} else {
				$('#filePicker2').addClass('element-invisible');
			}
		};

		uploader.on('uploadAccept', function(file, response) {
			if (response && 'code' in response && response['code'] == 1) {
				$('.img_orignal').remove();
				var $icon = $(window.frameElement).parent().find('input');
				$icon.val(response['msg']);
				parent.$('#form-advertiser-add', parent.document).triggerHandler('valid', {
					el : $icon
				});
				if (file.file) {
					$('#' + file.file.id).attr('_url', response['msg']);
				}
				return true;
			} else {
				return false;
			}
		});
		$upload.on('click', function() {
			if ($(this).hasClass('disabled')) {
				return false;
			}
			if (state === 'ready') {
				uploader.upload();
			} else if (state === 'paused') {
				uploader.upload();
			} else if (state === 'uploading') {
				uploader.stop();
			}
		});

		$info.on('click', '.retry', function() {
			uploader.retry();
		});

		$info.on('click', '.ignore', function() {
			// alert('todo');
		});

		$upload.addClass('state-' + state);
		updateTotalProgress();
	});
})(jQuery);